Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 60mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke60 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S
Sixty millimetres of stroke with twenty of freedom: the stop screw on the MAJ40X60-20S sets the extend end anywhere from 40 to 60 mm, turning one cylinder into a family of settings for mixed product runs. Force class is the top of the MA range - 628 N push and 528 N pull at 0.5 MPa, 880 N and 739 N at 0.7 MPa, with a 128 kgf theoretical peak at 1.0 MPa. Budgeting about 377 N per cycle keeps the drive unstressed.
The body is not bolted together with tie rods: a stainless barrel, aluminium covers and a stainless block are rolled into one sealed round shell around a hard-chrome 16 mm rod, so condensation and light washdown do not rust it out. Fixed bumper pads quiet the stroke ends (deceleration only - adjustable cushioning lives in the MACJ line), and the standard-fit magnet pairs with CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S Is Used
Model-changeover stop on an assembly fixture
Retune the extend stop between 40 and 60 mm when product sizes change, avoiding cylinder swaps across the 628 N-rated station.
Sample press in a QC lab
Compresses test coupons with near 377 N of working force at 0.5 MPa; the fixed bumper gives a repeatable, quiet stop for consistent results.
Divertor paddle at a carton merge
A DMSG switch on the magnet-equipped barrel confirms paddle position while the stainless build handles humid plant air.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S the Right Cylinder?
Right-size check: 25 mm MAJ = 245 N push at 0.5 MPa, 32 mm = 402 N, this 40 mm = 628 N and it is the largest bore offered, so upsizing means leaving the family. Mount with FA flange, LB foot or I / Y rod knuckles - SDB and back-cover codes do not apply to adjustable units. The stop screw defines stroke end only; under power loss the rod keeps drifting, so it is not a load brake. At 60 mm of stroke side loads stay modest, but guide heavy tooling anyway to spare the rod bushing. Ports 1/8", rod thread M12x1.25.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X60-20S FAQ
628 N push / 528 N pull at 0.5 MPa; 880 N push / 739 N pull at 0.7 MPa; 128 kgf theoretical maximum at 1.0 MPa. Effective stroke adjusts from 40 to 60 mm via the 20 mm window. Runs on 40 um filtered air at 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, -20 to +70 C, with 1.5 MPa (215 psi) proof pressure.
Yes on both counts. The stainless-steel barrel and 20 um hard-chrome rod resist corrosion in humid or lightly washed areas, well beyond painted mini bodies. Each stroke end is softened by a fixed anti-impact pad that only decelerates - it is not a tunable air cushion like the MAC offers, and it will not lock the piston when air pressure drops.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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